/Engine/Plugins/Experimental/MeshModelingToolsetExp/Source/MeshModelingToolsExp/Public/SelfUnionMeshesTool.h
UBaseCreateFromSelectedToolAPI - subclasses typically implement these functions After preview is created, this is called to convert inputs and set preview materials (grouped together because materials may come from inputs) Subclasses should always implement this.
virtual void ConvertInputsAndSetPreviewMaterials ( bool bSetPreviewMesh )